Home / 20,955.02-31,411.53-11,599.20

Finding the Fourth Proportional to 20,955.02, 31,411.53 and 11,599.20

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Solution

The fourth proportional to 20,955.02, 31,411.53 and 11,599.20 is: 17,387.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.02 : 31,411.53 = 11,599.20 : x
  2. Step 2: Convert to fraction form
    20,955.02/31,411.53 = 11,599.20/x
  3. Step 3: Cross multiply
    20,955.02x = 31,411.53 × 11,599.20
  4. Step 4: Simplify right side
    20,955.02x = 364,348,618.78
  5. Step 5: Solve for x
    x = 364,348,618.78/20,955.02
  6. Step 6: Final answer
    x = 17,387.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.